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// boost utility cast test program -----------------------------------------//
// (C) Copyright Beman Dawes, Dave Abrahams 1999. Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// See http://www.boost.org for most recent version including documentation.
// Revision History
// 28 Set 04 taken from the old cast library (Fernando Cacciola)
#include <iostream>
#include <climits>
#include <cfloat> // for DBL_MAX (Peter Schmid)
#include <boost/numeric/conversion/cast.hpp>
#include <boost/core/lightweight_test.hpp>
# if SCHAR_MAX == LONG_MAX
# error "This test program doesn't work if SCHAR_MAX == LONG_MAX"
# endif
using namespace boost;
using std::cout;
int main()
{
# ifdef NDEBUG
cout << "NDEBUG is defined\n";
# else
cout << "NDEBUG is not defined\n";
# endif
cout << "\nBeginning tests...\n";
// test implicit_cast and numeric_cast -------------------------------------//
// tests which should succeed
long small_value = 1;
long small_negative_value = -1;
long large_value = LONG_MAX;
long large_negative_value = LONG_MIN;
signed char c = 0;
c = large_value; // see if compiler generates warning
c = numeric_cast<signed char>( small_value );
BOOST_TEST( c == 1 );
c = 0;
c = numeric_cast<signed char>( small_value );
BOOST_TEST( c == 1 );
c = 0;
c = numeric_cast<signed char>( small_negative_value );
BOOST_TEST( c == -1 );
// These tests courtesy of Joe R NWP Swatosh<joe.r.swatosh@usace.army.mil>
BOOST_TEST( 0.0f == numeric_cast<float>( 0.0 ) );
BOOST_TEST( 0.0 == numeric_cast<double>( 0.0 ) );
// tests which should result in errors being detected
BOOST_TEST_THROWS( numeric_cast<signed char>(large_value),
numeric::bad_numeric_cast );
BOOST_TEST_THROWS( numeric_cast<signed char>(large_negative_value),
numeric::bad_numeric_cast );
BOOST_TEST_THROWS( numeric_cast<signed char>(large_negative_value),
numeric::bad_numeric_cast );
BOOST_TEST_THROWS( numeric_cast<unsigned long>(small_negative_value),
numeric::bad_numeric_cast );
BOOST_TEST_THROWS( numeric_cast<int>(DBL_MAX), numeric::bad_numeric_cast );
return boost::report_errors() ;
} // main
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